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首页> 外文期刊>Textile Chemist and Colorist >Dyeing of Cotton Fabric with Reactive Dyes Using Hydrogen Peroxide Renovated Spent Dyebath Water
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Dyeing of Cotton Fabric with Reactive Dyes Using Hydrogen Peroxide Renovated Spent Dyebath Water

机译：过氧化氢水处理过的去离子水对活性染料棉织物的染色

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Reactive dyes were used to dye 100% bleached cotton with red, blue, and yellow shades and a dye mixture containing equal amounts of each of three dyes. The spent dyebath water from these dyeings was mixed and subjected to decolorization treatment using a ferrous ion-hydrogen peroxide system (Fenton's Reagent) in an acidic medium. The four shades were dyed again in 100% peroxide renovated spent dyebath water after adjusting the pH to 10.8-11.0. No additional chemical auxiliaries were added to the renovated dyebaths. The experiment was repeated through three reuse cycles. Color reproducibility of dyeings done in the recycled water was excellent for dark shades, closely matching the shades developed in dyeings using fresh tap water as the dyeing medium. The amount of acid needed to change the pH decreased with each cycle showing that the peroxide treatment produced substances that behave as an acid buffer. The COD of the solution increased with each reuse cycle and approached a terminal value after three reuse cycles indicating that the organic content of the bath was approaching a steady state. An economic analysis of the estimated chemical and energy savings achieved by dyebath reuse was also completed.
机译：活性染料用于将100％漂白的棉染成红色，蓝色和黄色，染料混合物中每种染料的含量相等。将来自这些染色的废染浴水混合，并在酸性介质中使用亚铁离子-过氧化氢系统（Fenton试剂）进行脱色处理。将pH值调节至10.8-11.0后，将这四种色调再次用100％过氧化物改良的废染浴水中染色。翻新的染浴中没有添加其他化学助剂。通过三个重复使用周期重复该实验。在循环水中进行染色的颜色再现性对于深色调非常出色，与使用新鲜自来水作为染色介质的染色中的色调非常接近。改变pH所需的酸量随每个循环而减少，这表明过氧化物处理会产生充当酸缓冲剂的物质。溶液的COD随着每个重复使用周期的增加而增加，并在三个重复使用周期后达到终值，表明浴液的有机物含量接近稳态。还完成了对染浴重复使用所实现的估计化学和能源节省的经济分析。

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